source: branches/HeuristicLab.BinPacking/HeuristicLab.Problems.BinPacking/3.3/Encodings/MultiComponentVector/Moves/ThreeWay/Moves/SwapPositionMove.cs @ 9495

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Encodings.PackingEncoding.MultiComponentVector;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
using HeuristicLab.Problems.BinPacking.Interfaces;

namespace HeuristicLab.Encodings.PackingEncoding.MultiComponentVector {
  [Item("SwapPositionMove", "A move on a multi component vector that is specified by two indexes. The packing informations at the speciefied indexes are beeing swapped.")]
  [StorableClass]
  public class SwapPositionMove : MultiComponentVectorMove {
    [Storable]
    public int AffectedGroup { get; protected set; }
    [Storable]
    public int Index1 { get; protected set; }
    [Storable]
    public int Index2 { get; protected set; }

    [StorableConstructor]
    protected SwapPositionMove(bool deserializing) : base(deserializing) { }
    protected SwapPositionMove(SwapPositionMove original, Cloner cloner)
      : base(original, cloner) {
        this.AffectedGroup = original.AffectedGroup;
        this.Index1 = original.Index1;
        this.Index2 = original.Index2;
    }
    public SwapPositionMove(int affectedGroup, int index1, int index2, MultiComponentVectorEncoding multiComponentVector)
      : base(multiComponentVector) {
        AffectedGroup = affectedGroup;
        Index1 = index1;
        Index2 = index2;
    }

    public override IDeepCloneable Clone(Cloner cloner) {
      return new SwapPositionMove(this, cloner);
    }

    public override IPackingSolutionEncoding GetSolutionAfterMove() {
      return GetVectorAfterMove(MultiComponentVector, AffectedGroup, Index1, Index2);
    }
    public static MultiComponentVectorEncoding GetVectorAfterMove(MultiComponentVectorEncoding multiComponentVector, int affectedGroup, int index1, int index2) {
      var result = multiComponentVector.Clone(new Cloner()) as MultiComponentVectorEncoding;
      var aux = result.PackingInformations[affectedGroup][index1];
      result.PackingInformations[affectedGroup][index1] = result.PackingInformations[affectedGroup][index2];
      result.PackingInformations[affectedGroup][index2] = aux;
      return result;
    }

    public override System.Type GetMoveAttributeType() {
      return typeof(SwapPositionMoveAttribute);
    }

    public override string ToString() {
      return "SPM(g=" + AffectedGroup + ",i1=" + Index1 + ",i2=" + Index2 + ")";
    }

    public override MultiComponentVectorMoveAttribute GetAttribute(double quality) {
      return new SwapPositionMoveAttribute(AffectedGroup, Index1, Index2,
        MultiComponentVector.PackingInformations[AffectedGroup][Index1].ItemID,
        MultiComponentVector.PackingInformations[AffectedGroup][Index2].ItemID, quality);
    }

    public override bool BelongsToAttribute(MultiComponentVectorMoveAttribute attribute, bool hardCriterion) {
      SwapPositionMoveAttribute actualAttribute = attribute as SwapPositionMoveAttribute;
      if (actualAttribute != null) {
        if (hardCriterion) {
          if (Index1 == actualAttribute.Index1
            || Index2 == actualAttribute.Index2
            || MultiComponentVector.PackingInformations[AffectedGroup][Index1].ItemID == actualAttribute.ItemID1
            || MultiComponentVector.PackingInformations[AffectedGroup][Index2].ItemID == actualAttribute.ItemID2)
            return true;
        } else {
          if (Index1 == actualAttribute.Index1
            && Index2 == actualAttribute.Index2
            && MultiComponentVector.PackingInformations[AffectedGroup][Index1].ItemID == actualAttribute.ItemID1
            && MultiComponentVector.PackingInformations[AffectedGroup][Index2].ItemID == actualAttribute.ItemID2)
            return true;
        }
      }
      return false;
    }
  }
}